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目的探讨大脑半球生殖细胞瘤的CT、MRI表现特征并对其进行鉴别诊断。方法报道1例患者的CT、MRI影像资料,并结合文献进行回顾性分析。结果本例肿瘤位于左顶枕叶,CT平扫为高密度,周围水肿及占位效应明显;其MRI表现为:T1WI、T2WI均呈等信号为主,其内有囊变坏死,周围水肿明显;GdDTPA增强扫描肿瘤呈不均匀明显强化。CT、MRI表现与该部位其他常见肿瘤不易鉴别,经手术病理证实为恶性生殖细胞瘤。结论大脑半球生殖细胞瘤罕见,其CT、MRI表现有一定的特征性,是其诊断的重要依据。
Objective To investigate the CT and MRI features of hemoblastic germ cell tumors and to make differential diagnosis. Methods One patient’s CT and MRI images were reported and retrospectively analyzed. Results In this case, the tumor was located at the left upper occipital lobe. CT scan showed high density with obvious edema and mass effect. MRI showed that T1WI and T2WI showed equal signal, cystic degeneration and necrosis, ; GdDTPA enhanced scan showed uneven tumor was significantly enhanced. CT, MRI and other parts of the common tumor is not easy to identify, confirmed by surgical pathology of malignant germinoma. Conclusions Rare hemispheric germ cell tumors have some characteristic features of CT and MRI manifestations, which is an important basis for their diagnosis.